11 | Add to Reading ListSource URL: www.accu.orgLanguage: English - Date: 2010-10-10 09:17:16
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12 | Add to Reading ListSource URL: www.ens-lyon.frLanguage: English - Date: 2010-03-24 08:54:49
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13 | Add to Reading ListSource URL: www.doe.virginia.govLanguage: English - Date: 2013-01-04 13:54:38
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14 | Add to Reading ListSource URL: www.dot.nd.govLanguage: English - Date: 2013-01-18 10:14:52
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15 | Add to Reading ListSource URL: www.uned.esLanguage: English - Date: 2006-02-22 10:04:28
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16 | Add to Reading ListSource URL: www.deq.state.or.usLanguage: English - Date: 2013-12-09 13:48:47
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17 | Add to Reading ListSource URL: commons.bcit.caLanguage: English - Date: 2014-05-26 15:54:53
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18 | Add to Reading ListSource URL: www.nwrc.usgs.govLanguage: English - Date: 2012-07-06 09:15:58
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19 | Add to Reading ListSource URL: water.epa.govLanguage: English - Date: 2013-06-20 07:01:48
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20 | Add to Reading ListSource URL: www.dot.nd.govLanguage: English - Date: 2013-01-18 10:14:52
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